Deck 90: Hybrid Safety and Service Procedures

Question 1

Which of the following systems will require disabling the high voltage (HV) system during service?

A)Air filter replacement
B)Oil change
C)Tire rotation
D)Electric AC compressor replacement

Answer 1

Electric AC compressor replacement

Question 2

The hybrid vehicle control system can detect a high voltage leakage to ground by use of ________.

A)Ground noise sensors
B)A temperature sensing system
C)A ground fault monitor system
D)Air bag sensors

Answer 2

A ground fault monitor system

Question 3

All of the following will shut off the high voltage to components and circuits EXCEPT ________.

A)Disconnecting the 12- volt auxillary battery
B)Removing the main fuse, relay, or HV plug
C)Opening the drivers door
D)Turning the ignition off

Answer 3

Opening the drivers door

Question 4

A hybrid vehicle 12 volt battery is located under the hood. This will usually be a ________ type battery.

A)Gel-cell
B)Flooded
C)NiCad
D)AGM design

Question 5

Servicing the base brakes on a hybrid vehicle requires the technician to ________.

A)De-power and disconnect the HV battery
B)Disconnect the brake regeneration cables
C)Replace the pads when needed, just as on any other vehicle
D)None of these

Question 6

Some hybrid air conditioning systems use an electrically driven compressor that uses a special lubricant. What precaution should be taken when servicing these systems?

A)A dedicated recycling machine for the HEV
B)Extra refrigerant filters
C)A special gauge set
D)Low pressure pump

Question 7

What is the recommended location to store a HEV ignition key during service?

A)Lock box
B)In the vehicle glove box
C)leave the key in the ignition
D)Top of the technician's tool box

Question 8

On a HEV that uses a "START" push button, what precaution should be taken when de-powering the vehicle?

A)Put the key fob in the trunk
B)Make sure the key is somewhere inside the vehicle
C)Make sure the key fob is at least 15 feet away from the vehicle
D)No special precautions are needed

Question 9

How long can power be retained in the high voltage system once it has been disabled?

A)90 seconds
B)10 minutes
C)4 hours
D)None of these

Question 10

How should NiMH batteries be disposed of?

A)Submerged in water and then disposed of in the regular trash
B)Burned at an EPA-certified plant
C)In the regular trash
D)Call an 800 number shown under the hood of the vehicle for information

Question 11

How often should linesman's gloves be inspected by a qualified testing lab?

A)Yearly
B)Monthly
C)Every six months
D)Daily

Question 12

Technician A says that all components in the high voltage battery box are completely insulated from the rest of the vehicle for safety. Technician B says that the high voltage battery box is located under the hood in some vehicles. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 13

The high voltage cables ________.

A)Are energized during events where the ignition switch is in the "on" position
B)Are orange in color
C)Both A and B
D)Neither A nor B

Question 14

Technician A says that when a hybrid electric vehicle must remain in the shop for over a month, the battery should be charged by running the vehicle if possible. Technician B says that if the battery unit must be removed, it should be handled with PPE and always tested for voltage and treated with care. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 15

Technician A says that the high voltage cables may be repaired if damaged while lifting on a vehicle hoist. Technician B says that a paint oven does not get hot enough to damage high voltage cables or other hybrid components. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 16

What is TRUE regarding protective gloves worn during HV system service?

A)Leather gloves are worn over the rubber gloves to protect the rubber from damage
B)Rubber gloves should be checked for leaks before each use
C)Both A and B
D)Neither A nor B

Question 17

Technician A says that CAT I meter leads may be used to test HV system components as long as the DMM itself is rated CAT III. Technician B says that CAT IV test leads are clamp-on inductive type leads. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 18

Technician A says that DMMs are assigned CAT ratings based on voltage capacity alone. Technician B says that DMMs are rated according to their ability to handle potential electrical energy. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 19

Technician A says that the that HV battery is grounded to the vehicle chassis. Technician B says that the HV battery and cables are completely insulated and isolated from the rest of the vehicle. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 20

Technician A says that a completely assembled electric motor is not likely to produce injury by electrical shock. Technician B says that turning off the ignition on an HEV causes the system main relay to disable the high voltage system. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 21

Which statement regarding high voltage circuitry in HEVs is NOT correct?

A)The system is energized when the ICE is running and the vehicle is accelerating
B)The system is disabled when the ignition switch is off
C)The HV system is not energized when the ICE is in idle stop mode and the electrical A/C compressor is running
D)None of these